@Kim Thompson-Tesori …as a member for 3 years now, you should know: …the term used is doubled die because the die that struck the coin was doubled when it was made. Go to doubleddie.com and read the many educational articles there, especially “How dies are made”. When you suspect doubling on the coins you find, most members here compare the coin with known varieties at either Variety Vista or doubleddie.com, John Wexler’s website…Spark